Heddle mechanism



Feb. 16, 1932. J. KEYS 1,845,715

HEDDLE MECHANISM Filed Oct. 20, 1930 2 Sheets-Sheet l ATTORNEYS.

Feb. 16, 1932. KEYS 1,845,715

HEDDLE MECHANISM Filed 001:. 20, 1930 2 Sheets-Sheet 2 INVENTOR v 6 BY 73 v w v 74/ ATTORNEYS.

Patented Feb. 16, 1932 UNITED STATES PATENT OFFICE JEREMIAH KEYS, on PHILADELPHIA, PENNSYLVANIA, AssIeNonfro ALVA CARPET & RUG COMPANY, A CORPORATION or PENNSYLVANIA a 1 3111mm MECHANISM Application filed October 20, 1930. Serial No,489,871.

This invention relates to heddle mechanisms for looms, and is herein illustrated as embodied in a loom particularly adapted for use in. weaving velvet or tapestry rugs according to a method wherein one set of pilewarp threads is supplied from one beam for one part of the pattern length of the rug and a second set of pile-warp threads is sup; plied from a second beam for theother part of the pattern length of the rug, the warp threads of the second beam being idle while the warp threads of the first beam are active and vice versa.

In carrying out the above method, two heddle units are required for controlling the pile-warp threads, one for the group of threads of one beam and the other for the group of threads of the other beam, in addition to the usual heddle unit for controlling the stutter threads and the customary pair of heddle units for controlling the binder threads.

Of the above mentioned heddle units, the

one controlling the stufi'er threads and the two controlling the binder threads remain connected to the operating means therefor from the time the weaving of the rug is begun until it is completed.

As to the heddle units controlling the pilewarp threads, it has been customary to operate such units from a common actuating means, thus requiring first one of these heddle units and then the other to be connected to the heddle-actuating means, de-, pending upon whether that part of the weavthereby are held in a fixed longitudinal relation and are anchored to a stationary part of the loom, as by a suitable thread-clamping device.

The relation of the heddle-actuating means,

1 for the heddle units controlling the pile-warp threads he pile-warp controlling heddle units has been such that considerable time and effort have been required in connecting theseheddle units to the actuating means and in disconnecting the same from such actuating means,and an object of this invention is to so simplify the connecting and disconnecting of these heddle units as to efiect a considerable saving in time and trouble.

Another object of theinventionis to pro vide an improved heddle mechanism which is adapted for use not only in connection with the pile-warp controlling heddle units but also in connection with the staffer-controlling heddle units.

Other objects and advantages of the invention will become apparent from the following description, taken in connection with the accompanying drawings in which Figure 1 is a perspective view of a loom having the improved heddle mechanismembodied therein; Figure 2 is a view partly in elevation and partly in section of the loom and Figure 3 is a fragmental vertical sectional View of the loom.

The loom, in association with which the heddle mechanism embodying this invention is herein illustrated, comprises aframe 5, including arch homes 6 and abreast beam 7 The loom further comprises a lay 8 which is constructed and operated asusualin front of a plurality of heddle units 9, 10, 11, 12 and 13, the first two of which are adapted to control, 1 respectively, sets of pile-warp threads 14 and 15 supplied from beams 16 and 17 and the next two of which are adapted to control binder threads 18 and 19 supplied from a beam "20, and the last of which is adapted to control wadding or stufiing threads 21 supplied from a beam 22. 1

During such time as the weaving operation is being carried out with respect to the set of pile-warp threads 14, the heddle unit 9 con trolling such threads is raised and lowered and the heddle unit 10, which is adapted to control the set of warp threads 15, is held up out of operation, as by suitable link or hanger 23 suitably supported by the arch beams (i and adapted for detachable connection with the upper frame member of that heddle unit.

While the heddle unit 10, together with the set of warp threads 15 controlled thereby, is out of operation, such threads are held in a fixed longitudinal relation to each other and are anchored to a stationary part of the loom, such. as the breast beam 7 by a suitable thread-clamping device 24 removably supported at its ends by a pair of brackets 25 carried by the breast beam and similarly supported intermediateits ends by a bracket 26 carried by the lower end of' an arm 27 which is secured at its upper end to one of the arch beams 6.

The pile-warp thread controlling heddle units 9 and 10, and likewise the stufi'er-controlling heddle unit 13, are supported by a carrier 80-having end members 31 adapted to slide within vertical channels or grooves 33 formed in oppositeside' members of the loom frame. The end members 31 of the carrier are provided with grooves 34 and 35 adapted for the reception of'the heddle units 9 and 10 at opposite sides of the stutter-controlling heddle unit 13. which is secured to. and adapted to move with the carrier 30 at all times.

From the fact that these: heddle. units are slidably connected to the carrier 30, it follows. that either of such heddle units may be lifted relatively to the carrier and supported in its inactive position by the. hanger 2-3 at such a'height that it. is not influenced by the reciprocatorymovement of the carrier.

Moreover, it. will, be. understood that either of these heddle units may bethus rendered inactive without disturbing, the operative position of the other and, of course, without disturbing the intermediate heddle unit,

namely, thesniffer-controlling,heddle unit 13 which is permanently secured to and at all times actuated by the carrier 30-.

The operating means for the carrier 30, whereby one or the other of the heddle units 9 and 10, as the case may be, and the stuffercontroll'ing, heddle unit 13 may be operated a. properly timed relation to the heddle units. 11. and 12,. which are adapted to reciprocate, vertically within the usual guides or ways of. the side members of the loom frame,

includes a pair of cams 38 and 89 secured to acam shaft 40 extending transversely of the loom: and adapted to be operated by suitable mechanism, not shown. These cams cooperate, respectively, with treadles 41 and 42 fulcrumed on a shaft 43, the treadles being connected by rods 44 and 45 to suitably supported rocking levers 46 and 47 of conventional design, which are connected by links 48 and 49 to suitably supported rocking levers 50 and 5-1, also of standard design. The rocking levers 46 and 50 are connected by rods 53 to the upper frame member of the heddle unit 13,

so that as the treadle 41 is depressed the carrier 30, together with the heddle units carried thereby, is lifted. To the side member 32: of' thecarrier are connected straps 54 which pass about pulleys 55- mounted on a shaft 56 extending transversely at the loom and connected to the side member thereof, the straps 54 being in turn connected to the rocking levers 47 and 51 which are lowered as the rocking levers 46 and 50 are raised, and which are raised as the, rocking levers 46 and 50 are lowered.

For operating the heddle units 11 and 12, a similar mechanism is employed which includes a pair of cams 58 and 59 carried by the shaft 40 and cooperating with treadles 60 and 61 which are connected by rods 62 and i 63 to rocking levers 64 and 65 mounted similarly to the rocking levers 46 and 47 and connected by rods 66' and 67 to rocking levers 68 and 69 mounted similarly to-the levers 50 and 5-1.. The levers 65 and 69 areconnected to the upper frame member of the heddle unit 11 by rods 70 and the levers 64 and 68: are connected tov the upper frame member of the heddle unit 12 by rods 71, downward movement of one of the heddle unitsbeing insured as the other heddle unit moves up by reason of their being connected to. each other by a pair of straps. which are secured to. the lower frame members thereof and extend downwardly about. pulleys 73. carried by the shaft 56.

From the foregoing, description, it will be apparent that either of the piles-Warp controlling heddle units may be rendered active or inactive at a. considerable saving in time and: trouble as compared with former practice, and that the improved heddle mechanism is a generally simplified one which. is admirably adapted for use not. only in connection with the pipe-warp controlling heddle unitsv but also in connection with the stutter-controlling heddle unit which, according to this invention, is locatedforwardly of the. bindercontrolling, heddle, units rather than rearwardly thereof,.as has been the common prac-- tice, with the advantageous result that the stu-ffer threads, at a point immediately in front of the fabric, are prevented from sagging, such sagging being most likely to ordinarily occur when stuifer threads of jute are employed. r 4 I 7 Although only one form of the invention is herein shown and described, it will be: understood'that. various changes may be made without departing from the spirit of the invention or the scope of the following claims.

What is claimed is:

1. In a loom, a heddle mechanism comprising a carrier movable; relatively to the loom frame, a heddle unit rigid with respect tosaid carrier and movable therewith, independently movable heddle units associated withsaid carrier and adapted to be moved therewith to form sheds, means for holding one or another of said independently movable heddle units so that it does not participate in the shed-forming operation, and means for operating said carrier.

2. In a loom, a heddle mechanism comprising a carrier movable relatively to the loom frame, a heddle unit rigid with respect to said carrier and movable therewith, independently movable heddle units associated with said carrier and adapted to be moved therewith to form sheds, supporting means for holding one or another of said independently movable heddle unitselevated with respect to said carrier, so that it does not participate in the shed-forming operation, and means for operating said carrier.

3. In a loom, a heddle mechanism comprising a carrier movable relatively to the loom frame and including end members having grooves, heddle units located in said grooves and adapted to be moved with said carrier to form sheds, means for holding one or another of said heddle units elevated with respect to said carrier so that it does not participate in the shed-forming operation, and means for operating said carrier.

4. In a loom, a heddle mechanism comprising a carrier movable relatively to the loom frame and including end members having grooves, heddle units located in said grooves and adapted to be moved with said carrier to form sheds, means for holding one or another of said heddle units elevated with respect to said carrier so that it does not participate in the shed-forming operation, a fixed heddle unit secured to said carrier and movable therewith, and means for operating said carrier.

5. In a loom, a heddle mechanism comprising a carrier movable relatively to the loom frame, pile-warp-thread-controlling heddle units associated with said carrier and adapted to be moved therewith to form sheds, means for holding one or another of said heddle units so that it does not participate in a the shed-forming operation, a stuifer-controlling heddle unit rigid with respect to said carrier and movable therewith, bindercontrolling heddle units located rearwardly of said carrier, and means for operating said carrier together with said stuflencontrolling heddle unit and one or another of said pilewarp controlling heddle units and for operating said binder-controlling heddle units.

6. In a loom, a heddle mechanism comprising a carrier movable in operation relatively to the loom frame, means for operating said carrier, heddle units connected to said 5 carrier for movement relatively to each other and adapted to be moved therewith to form sheds, and means for holding one of said heddle units so that it does not participate in the shed-forming operation while the other of such heddle units moves with said carrier and participates in the shed-forming operation.

7. In a loom, a heddle mechanism comprising a carrier movable in operation re1atively to the loom frame, means for operatspecification.

JEREMIAH KEYS. 

